nodejs
diff --git a/Collapse file
‎lib/events.js‎
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+1-1Lines changed: 1 addition & 1 deletion b/Collapse file
‎lib/events.js‎
Copy file name to clipboardExpand all lines: lib/events.js
+1-1Lines changed: 1 addition & 1 deletion
diff --git a/Collapse file
‎test/parallel/test-events-listener-count-with-listener.js‎
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+12Lines changed: 12 additions & 0 deletions b/Collapse file
‎test/parallel/test-events-listener-count-with-listener.js‎
Copy file name to clipboardExpand all lines: test/parallel/test-events-listener-count-with-listener.js
+12Lines changed: 12 additions & 0 deletions
@@ -850,7 +850,7 @@ function listenerCount(type, listener) {
 
     if (typeof evlistener === 'function') {
       if (listener != null) {
-        return listener === evlistener ? 1 : 0;
+        return listener === evlistener || listener === evlistener.listener ? 1 : 0;
       }
 
       return 1;
 
@@ -12,6 +12,18 @@ assert.strictEqual(EE.listenerCount('event'), 0);
 assert.strictEqual(EE.listenerCount('event', handler), 0);
 assert.strictEqual(EE.listenerCount('event', anotherHandler), 0);
 
+EE.once('event', handler);
+
+assert.strictEqual(EE.listenerCount('event'), 1);
+assert.strictEqual(EE.listenerCount('event', handler), 1);
+assert.strictEqual(EE.listenerCount('event', anotherHandler), 0);
+
+EE.removeAllListeners('event');
+
+assert.strictEqual(EE.listenerCount('event'), 0);
+assert.strictEqual(EE.listenerCount('event', handler), 0);
+assert.strictEqual(EE.listenerCount('event', anotherHandler), 0);
+
 EE.on('event', handler);
 
 assert.strictEqual(EE.listenerCount('event'), 1);
Original file line number	Diff line number	Diff line change
`@@ -850,7 +850,7 @@ function listenerCount(type, listener) {`
`850`	`850`
`851`	`851`	`if (typeof evlistener === 'function') {`
`852`	`852`	`if (listener != null) {`
`853`		`- return listener === evlistener ? 1 : 0;`
	`853`	`+ return listener === evlistener \|\| listener === evlistener.listener ? 1 : 0;`
`854`	`854`	`}`
`855`	`855`
`856`	`856`	`return 1;`